Journal
TETRAHEDRON
Volume 66, Issue 21, Pages 3695-3701Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.03.070
Keywords
Colorimetric chemosensor; Squaraine; Copper ion; Fluorescent probe; Imaging agents
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Funding
- National Natural Science Foundation of China [20772086]
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New squaraine-based chemosensors SQ1 and SQ2 functionalized with 2-picolyl units were first synthesized and used as highly selective and sensitive calorimetric and fluorometric dual-channel sensors for Cu2+-specific recognition in aqueous systems. Among a series of individual metal ions, only Cu2+ could result in dramatic color changes. We also evaluated their capability of biological applications and found that SQ2 could be successfully employed as a Cu2+-selective probe in the fluorescence imaging of living cells. (C) 2010 Elsevier Ltd. All rights reserved.
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